Event: Club Championship

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Opponent Rating Result
John P Knee 1739 0 - 1
Lee Davis 2023 0 - 1
Ian J Clarke 1914 0 - 1
John Chester 1733 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1652 = (7409 + 400 * (1 - 3)) / 4)

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